The old mirror is in perfect condition - simply cos he washes the damn car 3 times a week! :)
I nearly had the mirror myself after some tool hit mine yesterday! :cry:
 
It cost me £88 for the main unit, £25 for the glass and £25 for the housing then a further £25-30 for spraying. Could probably get the glass and housing cheaper from other suppliers but i just ordered the whole lot together to save hassel.